America's national parks face challenges

Joshua trees now grow in abundance in the Mojave National Preserve in California, considered one of the Top 10 endangered parks due to commercial development and recreation.

Robert Harbison/The Christian Science Monitor/File

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Acadia National Park, Maine — Park ranger Matt Holly stands atop the bald, rounded top of Cadillac Mountain as a small knot of tourists huddles around him. At just over 1,500 feet, Cadillac is the highest point along the US Atlantic coastline. On this late summer day, the vista is spectacular: Lush green forests and azure ocean spread from the Porcupine Islands in Frenchman Bay to the east to the Cranberry Islands in the south and Seal Cove to the west on the Gulf of Maine. Most of the panorama is part of Acadia National Park, the oldest national park east of the Mississippi, which is made up entirely of lands donated by private citizens.

But the view isn’t always this pristine, explains the slender young ranger from under his Smokey Bear hat. He holds up two charts: One shows high levels of air pollution in the park when the winds are from the west. Another shows sharply lower levels when winds are from the north or south. Ozone levels at Acadia sometimes rise to what are considered unhealthful levels, and the polluted air is suspected of causing the mercury found in fish caught in the park’s shimmering freshwater lakes. Without air pollution, a visitor atop Cadillac should be able to see 110 miles. Today, 33 miles is more like it.

In many ways, Acadia typifies the state of US national parks today. It possesses extraordinary scenic beauty that remains largely intact. Americans visit it in impressive numbers.

This fall may prove to be a watershed moment for the parks, which historian and conservationist Wallace Stegner called “the best idea America has ever had.” They will earn a rare moment in the national spotlight, largely because of a six-part, 12-hour series by award-winning filmmaker Ken Burns that began Sept. 27. The documentary, which Mr. Burns calls “the most beautiful film we have ever made,” took 10 years to research and six years to film.

While chronic underfunding of the NPS has caused an estimated $8 billion to $9 billion backlog of sorely needed maintenance in the parks, for many that threat has been overshadowed by a greater concern: climate change.

As climate zones shift northward, “Joshua Tree National Park may lose all of its Joshua trees,” Mr. Saunders says. “Saguaro National Park may lose all of its saguaro [cactus].” Glacier National Park is expected to no longer have any glaciers by 2030, possibly sooner. Rocky Mountain and Yellowstone parks may lose their vast tracts of lodgepole and whitebark pines to mountain pine beetles, which could survive at higher latitudes and elevations.

“The parks aren’t going to continue to provide these wonderful refuges for Americans, places where we can learn about our natural systems and wildlife if we don’t act in significant ways to protect them from climate-change impacts,” adds Mark Wenzler, a clean-air expert at the National Parks Conservation Association (NPCA), a nonprofit park advocacy group. “We’re at this kind of crossroads. What are we going to do?”

Even ocean acidification, another effect of ever-higher CO2 levels in the atmosphere, has become an issue for the parks. While snorkeling in the Virgin Islands National Park last winter, “I was amazed at some of the reefs that were just dead basically,” says Kurt Repanshek, founder and editor in chief of the online magazine National Parks Traveler.

In one sense, the parks’ future is tied to the reduction of greenhouse gases worldwide. But the parks also could benefit from other steps to help them adapt to the changes, Mr. Wenzler says. Coastal wetlands could be restored to buffer the effects of sea-level rise and storm surges. Reducing air pollution would strengthen forests and help them withstand expected longer droughts. Many park advocates say new corridors of land will be needed to connect existing Western parks and help animals and plant life move northward.

Finding money to restore and repair the parks won’t be easy during the current fiscal crisis. But delaying will only raise the cost. “It’s just like your house. If you don’t do that routine maintenance, you’re going to have a big bill staring at you. And the bill is growing,” Mr. Repanshek says.

The maintenance challenges are huge. The NPS’s 58 national parks and 333 monuments and historic sites contain some 680 water-treatment and wastewater systems, 505 dams, 1,804 bridges and tunnels, 8,500 miles of roads, 775 campgrounds, and 12,250 miles of trails, as well as 84.6 million acres of land. “Many national parks are little cities unto themselves,” says Phil Voorhees, a senior fellow at the NPCA.

Staffing levels at the parks continue to be a concern, Repanshek says. The Blue Ridge Parkway, designed by a landscape architect to show off the beauty of the terrain, doesn’t have a landscape architect on its staff. The Grand Canyon, a geological wonder, doesn’t have an on-staff geologist. There’s no volcanologist at volcanic Mt. Rainier. Dinosaur National Monument once had a staff of three paleontologists; it now has one. While research projects can be done by outsiders, “Why gut the research arm of the National Park Service?” he asks.

Although California is expected to close about 100 of its state parks as part of its fiscal belt-tightening, no one expects the NPS to have to resort to such drastic measures. “We can keep the gates open. But that’s not enough,” says Richard West Sellars, author of “Preserving Nature in the National Parks: A History.” “It doesn’t recognize the value of the parks. And it doesn’t give the public an ability to [fully] enjoy the parks and understand them more.”

Despite the immense problems that confront the parks, their treasures are still largely intact and are often awe-inspiring. Mr. Sellars recently spent time hiking in the Lamar Valley in Yellowstone’s northeast corner. “The appearance of that place is probably very much like it was 2,000 years ago,” he says. “It’s kind of a primeval scene. It’s a marvelous site.”